settings ui: Fix bug with navbar index to page index translation (#39245)

This happened when search results completely filtered out a page above
the selected page index.

The old index was calculated based on the nav bar entry's position and
the count of root entries above it, this was wrong because root entries
could be filtered out with a search. Now the page index is saved when
building the navbar

Release Notes:

- N/A

crates/settings_ui/src/settings_ui.rs

@@ -333,6 +333,7 @@ pub struct SettingsWindow {
 struct NavBarEntry {
     title: &'static str,
     is_root: bool,
+    page_index: usize,
 }
 
 struct SettingsPage {
@@ -574,6 +575,7 @@ impl SettingsWindow {
             navbar_entries.push(NavBarEntry {
                 title: page.title,
                 is_root: true,
+                page_index,
             });
             if !page.expanded {
                 continue;
@@ -590,6 +592,7 @@ impl SettingsWindow {
                 navbar_entries.push(NavBarEntry {
                     title,
                     is_root: false,
+                    page_index,
                 });
             }
         }
@@ -668,7 +671,7 @@ impl SettingsWindow {
                 }
                 this.build_navbar();
                 this.navbar_entry = 0;
-                cx.notify()
+                cx.notify();
             })
             .ok();
         }));
@@ -850,12 +853,7 @@ impl SettingsWindow {
             return 0;
         }
 
-        self.navbar_entries
-            .iter()
-            .take(index + 1)
-            .map(|entry| entry.is_root as usize)
-            .sum::<usize>()
-            - 1
+        self.navbar_entries[index].page_index
     }
 
     fn page_for_navbar_index(&mut self, index: usize) -> &mut SettingsPage {
@@ -1051,7 +1049,15 @@ mod test {
         }
 
         fn assert_search_results(&self, other: &Self) {
-            assert_eq!(self.navbar_entries, other.navbar_entries);
+            // page index could be different because of filtered out pages
+            assert!(
+                self.navbar_entries
+                    .iter()
+                    .zip(other.navbar_entries.iter())
+                    .all(|(entry, other)| {
+                        entry.is_root == other.is_root && entry.title == other.title
+                    })
+            );
             assert_eq!(
                 self.current_page().items.iter().collect::<Vec<_>>(),
                 other.page_items().collect::<Vec<_>>()
@@ -1066,6 +1072,20 @@ mod test {
         }
     }
 
+    impl SettingsPageItem {
+        fn basic_item(title: &'static str, description: &'static str) -> Self {
+            SettingsPageItem::SettingItem(SettingItem {
+                title,
+                description,
+                field: Box::new(SettingField {
+                    pick: |settings_content| &settings_content.auto_update,
+                    pick_mut: |settings_content| &mut settings_content.auto_update,
+                }),
+                metadata: None,
+            })
+        }
+    }
+
     fn register_settings(cx: &mut App) {
         settings::init(cx);
         theme::init(theme::LoadThemes::JustBase, cx);
@@ -1352,19 +1372,7 @@ mod test {
                 SettingsWindow::new_builder(window, cx)
                     .add_page("General", |page| {
                         page.item(SettingsPageItem::SectionHeader("General settings"))
-                            .item(SettingsPageItem::SettingItem(SettingItem {
-                                title: "test title",
-                                description: "General test",
-                                field: Box::new(SettingField {
-                                    pick: |settings_content| {
-                                        &settings_content.workspace.confirm_quit
-                                    },
-                                    pick_mut: |settings_content| {
-                                        &mut settings_content.workspace.confirm_quit
-                                    },
-                                }),
-                                metadata: None,
-                            }))
+                            .item(SettingsPageItem::basic_item("test title", "General test"))
                     })
                     .build()
             });
@@ -1373,19 +1381,7 @@ mod test {
                 SettingsWindow::new_builder(window, cx)
                     .add_page("General", |page| {
                         page.item(SettingsPageItem::SectionHeader("General settings"))
-                            .item(SettingsPageItem::SettingItem(SettingItem {
-                                title: "test title",
-                                description: "General test",
-                                field: Box::new(SettingField {
-                                    pick: |settings_content| {
-                                        &settings_content.workspace.confirm_quit
-                                    },
-                                    pick_mut: |settings_content| {
-                                        &mut settings_content.workspace.confirm_quit
-                                    },
-                                }),
-                                metadata: None,
-                            }))
+                            .item(SettingsPageItem::basic_item("test title", "General test"))
                     })
                     .add_page("Theme", |page| {
                         page.item(SettingsPageItem::SectionHeader("Theme settings"))
@@ -1406,4 +1402,67 @@ mod test {
             expected.assert_search_results(&actual);
         })
     }
+
+    #[gpui::test]
+    fn test_search_render_page_with_filtered_out_navbar_entries(cx: &mut gpui::TestAppContext) {
+        let cx = cx.add_empty_window();
+        let (actual, expected) = cx.update(|window, cx| {
+            register_settings(cx);
+
+            let actual = cx.new(|cx| {
+                SettingsWindow::new_builder(window, cx)
+                    .add_page("General", |page| {
+                        page.item(SettingsPageItem::SectionHeader("General settings"))
+                            .item(SettingsPageItem::basic_item(
+                                "Confirm Quit",
+                                "Whether to confirm before quitting Zed",
+                            ))
+                            .item(SettingsPageItem::basic_item(
+                                "Auto Update",
+                                "Automatically update Zed",
+                            ))
+                    })
+                    .add_page("AI", |page| {
+                        page.item(SettingsPageItem::basic_item(
+                            "Disable AI",
+                            "Whether to disable all AI features in Zed",
+                        ))
+                    })
+                    .add_page("Appearance & Behavior", |page| {
+                        page.item(SettingsPageItem::SectionHeader("Cursor")).item(
+                            SettingsPageItem::basic_item(
+                                "Cursor Shape",
+                                "Cursor shape for the editor",
+                            ),
+                        )
+                    })
+                    .build()
+            });
+
+            let expected = cx.new(|cx| {
+                SettingsWindow::new_builder(window, cx)
+                    .add_page("Appearance & Behavior", |page| {
+                        page.item(SettingsPageItem::SectionHeader("Cursor")).item(
+                            SettingsPageItem::basic_item(
+                                "Cursor Shape",
+                                "Cursor shape for the editor",
+                            ),
+                        )
+                    })
+                    .build()
+            });
+
+            actual.update(cx, |settings, cx| settings.search("cursor", window, cx));
+
+            (actual, expected)
+        });
+
+        cx.cx.run_until_parked();
+
+        cx.update(|_window, cx| {
+            let expected = expected.read(cx);
+            let actual = actual.read(cx);
+            expected.assert_search_results(&actual);
+        })
+    }
 }